Three-phase asynchronous motor skewed-slot rotor structure

Abstract

The invention relates to a three-phase asynchronous motor skewed-slot rotor structure which comprises a rotor body, and is characterized in that a plurality of rotor skewed slots are formed in the rotor body; the value b, namely a skewed stator tooth pitch, of each rotor skewed slot is 26.7 mm; the outer diameter of the rotor body is 356.8 mm; the length of the rotor core is 560 mm. According to the invention, the rotor skewed slots are adopted, the starting performance of the motor can be effectively improved, and the electromagnetic noise is reduced, the noise value before improvement is 86 dB, and the noise value after improvement is 81 dB; the mechanical loss and stray loss of the motor are further reduced, noise pollution of the environment cannot be produced, and the three-phase asynchronous motor skewed-slot rotor structure can be widely applied to rotor cores of high-voltage and efficient Y2-HV 315X-4-355KW 6KV motors.

Description

technical field [0001] The invention relates to a skewed rotor structure of a three-phase asynchronous motor, in particular it is used on the rotor core of a high-voltage high-efficiency motor Y2-HV 315X-4-355KW 6kV motor. Background technique [0002] The rotor core is a key component in the motor, and its material, inner circle size, outer circle size, slot size, slot fit, chute degree, etc. have a direct impact on the electromagnetic noise of the motor. However, Y, YKK, and Y2 series high-voltage three-phase asynchronous motors, which are most used in the market at present, still have defects such as large electromagnetic noise, large starting current, small torque, and large motor loss during long-term use. Due to the incomplete consideration of the original traditional design, the poor process foundation, the supporting parts and process schemes are not easy to make, and the operation is inconvenient, problems often occur, such as electromagnetic noise problems. The ro...

AI Technical Summary

Problems solved by technology

However, Y, YKK, and Y2 series high-voltage three-phase asynchronous motors, which are most used in the market at present, still have defects such as large electromagnetic noise, large starting current, small torque, and large motor loss during long-term use.

Due to the incomplete consideration of the original traditional design, the poor process foundation, the supporting parts and process schemes are not easy to make, and the operation is inconvenient. Problems often occur, such as electromagnetic noise problems.

The rotor adopts straight rotor slots, which cannot improve the starting performance of the motor very well, and the electromagnetic noise is relatively large, and there are obvious harsh sounds, which are easy to cause noise and environmental pollution

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